Important announcements regarding changes to test methodologies, reference ranges, CPT coding, new available assays or discontinued assays are reported to our clients weekly via MLabs Test Updates.  The following Test Update files, which contain information that is current when produced, may be printed for client use. However, information contained is subject to change over time. For more information or questions, please contact Customer Service at 800-862-7284.

TitlePosted DateEffective DateTest NameCPT CodeUpdate Type
Test Update 936Oxycodone and Metabolites, SerumG0480/80365 Test Code Change
Test Update 936Mycobacterium tuberculosis DNA by PCR87556 Test Code Change
Test Update 936CPT Updates CPT Code Change
Test Update 935MICHIGAN MEDICINE PROOFPOINT SECURE EMAIL Important Notification
Test Update 935Natural Killer Cell Functional Assay86352, 86357 Test Resumed
Test Update 935Oxycodone and Metabolites, Serum80365/G0480 New Tests
Test Update 935HLA LABORATORY NEW TEST CODES FOR DISCRETE RESULT REPORTING Test Code Change
Test Update 935Prometheus IBD Precis 81599 New Tests
Test Update 935NEW TEST CODES FOR GLUCOSE TOLERANCE PANELS New Tests
Test Update 935CPT UPDATES 2026 CPT Code Change
Test Update 934HOLIDAY HOURS Miscellaneous
Test Update 934Minimal Residual Disease for B-ALL, Bone Marrow & Peripheral Blood 88184, 88185 x5, 88187, 88188 Test Resumed
Test Update 934Soluble Interleukin-2 Receptor (IL-2R)83520 Test Resumed
Test Update 933Lipoprotein (a)83695 Production schedule change
Test Update 933Soluble Transferrin Receptor 84238 Production schedule change
Test Update 933Body Fluid Analysis, CSF89051 Miscellaneous
Test Update 933Hydrocodone and Metabolites, Serum 80361 Replacement Test
Test Update 932MLABS CONSULTATION RETURNS Important Notification
Test Update 931C1q, C2, C6, C7, C9 Complement, Functional 86161
Test Update 931Holiday Hours Important Notification
Test Update 930Urine Citrate, Urine Cystine, Urine Oxalate (24-hour Urine) 82507, 82127, 83945
Test Update 930Heparin Co-factor II 85130 Test Discontinued
Test Update 930Lipoprotein (a) Molarity 83695 New Tests
Test Update 929Minimal Residual Disease for B-ALL, Bone Marrow88184, 88185 x11, 88188 Replacement Test
Test Update 928Cytogenetics, Optical Genome Mapping, Blood or Bone Marrow 81195 New Tests
Test Update 928Natural Killer Cell Functional Assay86352, 86357 Test Down or Delayed
Test Update 927HLA LABORATORY TESTING UPDATE Important Notification
Test Update 927Trichinella Antibody IgG 86784 Test Discontinued
Test Update 927Infliximab with reflex to Infliximab Antibodies (Mayo)80230, 82397 Test Resumed
Test Update 927CARE EVERYWHERE UPDATE Important Notification